Process of making boots and shqes



H. C. EGEHTON.

PROCESS 0F Mmm: BOOTS AND SHOES.

APPLICAHON HLLU MB, 4. |9I9. 1,352,738. Pateutedsept. 14,192o- HENRY C. EGERTON, 0F

RIDGEWOOD, NEW JERSEY.

PRDCESS OF MAXNG BOOTS AND S'HQES.

Application filed February 4, 1919.

relates puitirulaily to along;` the einmal ii-w ilesri'ilied aiiii rlailnml in niy wipfiuliiig application burial bo. :il'i-.llliilf lilwi May T. 1ST/ib. lir temporarily lasting thishoe upper haring connectingportions ol' Fzibrio or other elements oi' members, the foiiporuting i'oiilieitiiig portions` of these members rari'ying or heilig' coated. or iin pregnated with suitable phenolic condensation @inentingr material, such halielite` rondeusite or rednianol varnish or other suitable Compositions and tienv all of the parts heat cured under pressure preferably together with a xfulcanizable rubber sole ele ment which may thus be securely conneet eil to the other parts` if desired` and more or less molded or shaped and vulcanized at the saine time. The shoe upper and coperating stifi'ening members, suoli as toe box or ifoiiiitei' elements haring ronnecting portions of labrifr riirryii'ig such eeineiiting ma terial may be advantageously lasted by beingr brought around a' metal last and directly tarked or stitched together in any desired way to insole members and thus temporarily held in proper relative position so that they may by suitable mold elements comprisingr the last be pressed together and to rubber or other sole elements by a heat curing treatment suliicient to solidify or cure the phenolic condensation eementing stiffening material used in this onnection.

The accompanying drawing shows in a somewhat diagrammatic; way various illus' tiativefQi-ins ol apparatus for Carrying out this process, and i' Figure l is a longitudinal vertical section through the cooperating mold elements which 1arefshou'ir in separated position for greater .rlearl'iessi Fig. `2 a transverse section through the last 'mideoperating shoe elements which is shown in separated position for greater clearness; and

Specification of Letters Patent.

rama-ii sept. 14 m2o.

[Serial No. 274,937.

Fig. 3 is a similar transverse seetiiin through the cowespoiidiurr portion oi the shoil und moli.: .ements` The shoe upper l1 mayl be formed in whole or iii part of canvas or other suitable fabric und may ol' course be pieliniinarily tailored or shaped that it an be broulfht iii place on the sei:- tional last and molding4 element 5, (i of an), suitable construction which may have u jiiiirtion portion T provided with suitable sei-uriii; lr means', such as interlo'iliiiip pins oi fastening: derives of any desired description not showir The section i) oi this last may iis indu-ated iii Fin'. 2 hare :i lui-u i'rpss 14 of surh shape and depth as to more or less ari'oi'iiinodate some o the solo iiieiiibeixs, such. for instance, as the insole nieniher or layer 1l u'hiih may thus be definitely lo: ratedv rib H may, if desired, be formed around this recess1 although the shape of-this edge por-` tion of the last may of course be rariedte-f Conditions, and 1t-- suit diiferent patterns or desired the last recess may have a more or less beveled portion 17 rib or bead so as to avoid sharp corners in this part of the roinpletedi'shoe. Une or in any suitable way so` A more or less rounded edge bead or adjacent the edge more such iii-sole members i6 of canvas or other fabric rari-ying: and preferablv more or less iiiipregi'nated with such pheno ie Coni densatioii reineiiting material 'may be put in. phue in this last recess after being brought ai moderate temperature to eliiiiinaie the varnish solvents and then preferably u'uimed somewhat to promote pliability. The shoe upper members may then tion :is by the stitching or taking iii-any desired Way, the shown in Fig. 2 as servingH forcibly bringing the shoe upper 22 tightly around the last together with the alininp; or to@ box fabric 23, the noone-rating junction or connecting portions of t ese fabrics being similarly coated or impregnated with such phenolic condensation eementiniir material for best results. One or more intermediate `'in-sole members, such as v1.8,Tr1aybe interi canvas or other lheaijy strong.r

terial` such as cotton batting` paper pulp or suitable mixtures thereof, winch may advan be brought Va round the last 1n any suitable Way and at least* temporarily secured or lasted in this posi? lastingr stitchingr 21 being,v r this purpose and All i) posed between thesefabrics and may be of fabric, oirV lin somecases ofwpaper orotlier` 4broilisming-` in connection therewith tlgwusl be more or less coatedor impregndxl'rith such phenolic condensation eel 7 aterial,although, if desired, yieldrial, such as cork or similar in-sole compositions may be used to a reater or less extent adjacent the inside o the shoe to cushion the wearers foot, if desired. Additional 4layers of insolin material, such as 19, may be used and simi arly coated or impregnated with such cementing material, which of course exerts a stifi'ening action on the com leted sole in proportion to the number of layers used and the proportion of phenolic condensation cementlng stiffening material incorporated therewith. It is also desirable to have .a connector layer, such as 20, provided with-a rubberized coatin 24 on its lower side as by s reading, frictioning or other coating metliods so as to promote union with the vulcanized rubber sole,

the up r side or body of this connector fabric Eing coatedl with or carrying such eementing material to promote union with the other parts of the shoe. The rubber composition sole 12 which may, if desired, have an integral heel 13 of any desired shape and construction may be preliminarily contoured or molded y to shape and be assembled in the mold adjacent the connector fabric so as to be securely and permanently united thereto and to the other sole elements durin the heat ressure curing treatment describe For t is pur an inclosing or collar mold element w ich may advantageously be in sectional form may be used to inclose the shoe and molding Vlast and this sectional mold collar may as indicated in Fig. 3 be formed of the sections 4, 25 having suitable portions `1, 2 astsbpwn in Fig. 1 provided with coperatiig pins and holes, such as 29, which insure the accurate alinernent of the parts as they are brought together. The bringing ltogether and holding of these collar sections may be affected in an suitable wa as by forming holes, such as mold Sections to coperate with the heavy locating Ind alining bottom 3, so y that w en these parts are brought together the conical to s of these locating pins first bring the col ar sections ofthe mold into proper alinement and then delinitely hold them asthe mold is forced together in the vuleanizin and curing press. If desired also suitable clgosing latches may be used to bring and hold together the upper or other parts of these mold collar elements and the latch 2 8 of heavy strong construction may be pivoted about the'pin 31 in the collar section 25 so as to co crate with a corresponding in 30 in the ad acont section 4 and have su cient wedging action so that w en the sections are forced together the press press' plate forces this pin and strongly and mold lunger orvadjacent atcb down over its in these ins 10 in the moldV these mold sections together. heele collar molds are formed with a suitable mold face 27 preferably forming a somewhat narrow leaka re rim for the rubber sole which is confine` at its upper edge portion by any suitable means such as a partition li) or edge 26 formed on this mold collar which is thus forced between the shoe upper andthe rubber sole and adjacent parts to maintain proper separation at this point as the rubber sole blank is under the vulcanizing heat and pressure forced into the different parts of the mold so as to more or less inclose the edge portions of the connector and adjacent stiii'ener members as shown in Fi 3. As indicated in Fig. 1, the bottom mol 3 is formed with a properly profiled sole portion 15 so that the rubber shoe sole is iven the proper shape and thickness throu out its different parts and the vulcanizablb rubber composition comprising, if desired, suitable fibrous or inert strengthening and filling materials may thus be Vulcanized Iand simultaneously united to the connector fabric while the phenolic condensation cementing material in this and other fabric members is cured or solidified so as to thoroughly and permanently unite all of these parts. This curing vulcanizin heat may be supplied to the mold elements in any suitable Way as by external heating or steam plates or by electric or steam heating elements in the mold sections themselves by which the curing vulcanizing heat of 250 t'o 320 F. more or less is exerted on the shoe elements for a quarteror half an hour more or less according tothe rubber and cementing compositions employed` In some cases it is desirable.to first last up the shoe upper and the coperating in sole fabric or other members, such as 16, 18, and then after assembling the collar mold sections and the mold bottom with the rubber sole 12 and the connector and other elements, such as19, 20, in connection therewith, the molding last and shoe upper may be inserted from the top thro h the en larged cavity 35 in the mold coil ar so as to be brought mto engagement with the other elements of the shoe sole, and as the press closes it acts on the mold last within the shoe and forces the coperating junction or connecting portions of these shoe sole and upper elements strongly together under h draulic pressure, for instance, sqthat t c proper enga ement of these fabric elementsl is insured, t e edge bead or rib 8 of the ,laat 5 more or less stretching the shoe membgm and forcing them down into 1' and e eet accurate] w sort l 1 ist securing these parts of the shoe together. This action furthermore eli'ectivel'y forces the shoe upper down against the partition lip or edge 2G so as to prevent upward lealtage at this point during the subset uent 'lient curing operation which suliicieutly softens the rulcanizable ,rubber sole. composition so that it forced more or less up around the connector 2U and the adjacent members which are in most cases somewhat distorted or lient or carried u )ward by this action of the rubber. It is oi course understood that the rubber sole blank used contains sutlicient material so that lifter forcing all of the parts together as above indicated the excess rubber is forced out of the mold past the relatively-narrow mold faces 27, `for instance, and the resulting fins or leakage` portii'ins may be ground or trimmed ofi in finishing the vulcanized united shoe. ln some cases the fabric or fibrous sole elements may be permanently united without simultaneouslj,r uniting them to a: rubber `ole and this ma; be convenienti;y acroniplisbeLL for example` by having the. canvas oi other fabric layers 19, 20 extend out to the edges of the mold recess below the par-- titiou lip 26 and both of these fabric layers may iu that oase be more thoroughli1 impregnated or filled with phenolic condensation cementing material with or without such rubberized coating or faring as previously described. The rest of the recess may be filled by an upward projection on theA mold bottom 3 or by inserting a' separate sole shaped metallic blank for this purposi,

sothat when the last mold and shoe elcments assembled thereon are. forced down under the heavy pressure `into the mold col lar the heat of the mold effects the curingv ol this phenolic condensation. eenienting maierial ia the. coperating junction or con neeting portions o'lthese shoe elements so as to ei'l'ect their secure and permanent union and provide a proiecting'hiln'ie weltA or edge portion around the shoe sole which may be stitched or otherwise. attached to a rubber or other shoe sole of 'any desired Composition or character.

This invention has been disclosed in connection witha number of illustrative,ein-4 Patent is set forth in the appendodiaunsz 1. :The process of makinglshoes which comprises assembling on Aa molding last and temporarily connecting an upper and insole elements having fabi-ie oonnetitingrportions carrying phenolic `eolidrisation ce-v menting material, inserting said last and 4 said shoe elements. i

assembled elements into the cavity in aseo; ...4; tional mold provided with au inwardly pm jecting partition lip to cooperate with the edge portions of said mold last to forcey said connecting portions into coperation 4with a. 1-0l vulcanizable, rubber sole and fabrilI coul. nector member beneath said partition and holding said mold and shoe elements toy ,i gether during a heat curing treatment to` Ai i vulcanize said rubber sole and cure'said 7o l phenolr.` condensation cementing niatoriwlwwi and imite the connecting portions ofsaid shoe elements.

2. The process of making shoes which i,

lcomprises assembling on a molding ,lastanduoww temporarily oonneeting'an upper and in. sole elements having fabric connecting pora i tions carri-'ing phenolhl condensation eod .5 menting material, inserting said lastand assembled elements into a sectional mold 8airovided with an inwardliv projecting par tition nien'lber to cooperate willi the edge portions of said mold last to force said conL necting portions into cooperation within. i-'ulcanizable rubber sole and fabric oon- 90 nector member beneath said partition memi ber and holding said inold and shoe ele-l ments together vduring a heat curing treat f ment to vulcanifze said rubber solo and eure ffii said phenolic condensation cementing ma` b5* f terial and unite the connecting portions of '3. The process of making shoes which f eor'nprises assembling on a molding last alu A A ff' upper and sole elements having fabricy eon-v necting portions carrying phenolic condenv" f' sation cementing material. inserting said last and assembled elements into a mold pr'ovided with an inwardlyY projecting partition nieinber to cooperate with the edge portions 10:3 ol said mold last to'torce said connecting portions into cooperation willi :i vult-animible rubber sole beneath said Apartition niember and holding said mold and shoe elements together during heat curing treatmentito HU vuleanize said rubber sole and curesaid" l phenolic condensation reinenting material fi and unite the conneeting portions of saidl'v, shoe elements. i', l. The process of `making shoes which 5115,.; comprises assembling on a molding last an upper and sole elements having fabric eoii-` r o neeting portions carrying phenolic eondensation-ceinenting material, forcing said last and assembled elements into eoperation i'iifi with an inwardly projecting partition member arranged to cooperate with the edge por@ i tions of said mold last and forcing the innerI lo, s Aportions of a vuleanizablejrubbr sole and.

` fabric connector member beneath seid par- 12.5.

tition member into engagement withl saidlw sole elements and holding' said shoe elements? I 1,11 together during 'a heat Vizilirifrig:treatment"to,4 NL ,je

t'iilnitnize 'siiid 'rubber 'sole andV cure said phenolic condensation eexnenting material and unite the connecting portions of said shoe elements.

5. The process of making shoes which comprises assembling on a molding last an upper and sole elements having iibrousconnecting portions carryin sation cementing materia forcing said last and assembled elements into coperation with an inwardly projecting artition memlo ber arranged tocoperate wit the edge portions of said mold last and forcing the inner.

portions of a vulcanizable rubber sole beneath said partition ember into en agement with said sole e ements and ho ding said shoe elements ,together durin a'heat curing treatment to vulcanize sai rubber sole and cure said phenolic condensation oementing material and unite the connecting portions of said shoe elements.

6. The process of making shoes which comprises assembling on a molding last an upper and sole elements having fibrous connecting portions carryinl phenolic condensation ccmenting materia forcing said last and assembled elements Vinto cooperation with a partition member and with a vulcanzable rubber sole adjacent said partition member into engagement with said sole clements and hol ing said shoe elements togather during a heat curing treatment to vulcanize'said rubber sole and cure said phenolic condensation cementing material and unite the connecting portions of said shoe elements.

7. The process of making shoe elements which comprises assembling on a molding lllast and temlporarily connecting anppper nd in-sole e ements having fabric connecting portions carrying. phenolic condensation 4o cementin material, insertin said lastand assembl elementsin a sectional mold provided with an inwardly rojecting partition to co rate with the e portions of said mold ast and be force 'into en agement with sole elements comprising a fa ricv conneotor member beneath said partition and holdi j together and lheating said mold and shoe e ments to cure' said p eholic condensation cementing material and permanently 5o and strongly unite the connecting portions of said shoe elements.

8. The p 'of making shoe elemepts which comprises assembli .on a molding last an upper and insole e ements having 56 fabric connecting portions carrying phenolic condensation cementin material inserting said last and assemble elements in a sectional mold provided with an inwardly projecting partition to co rate with the a0 edge pontiona of said mo d last and be forced into engagement with sole elements .com risin Y* fay ric connector material -beneat sai vpartition ,and lholdin together and heating said mold and' shoe e ements to l@ 66 cure said phenolic condensation cementing phenolic condenj elements to cure sai nennen material and permanently and stron ly unite the connecting portions of said shoe e ements.

9. The process of making shoe elements whichv comprises assembli on a molding last an upper and` sole eements having fibrous connecting portions carrying phenolic condensation cementing material, insorting said last and assembled elements in a sectional mold into engagement with an inwardly pro'actingy partition to co crate with the e ge portions of said mold last and be forced into 4engagement with sole elements comprisin fibrous connector material adjacent sai partition and holding together and heatin said mold and shoe phenolic condensation cementing material and permanently and stro ly unite the connecting portions of said s oe elements.

10. The shoe making process com rising ssemblin an upper and shoe sti ening cansino uding an insole of fabric carryin phenolic condensation cementing mate ria and an additional fabric sole element coated on its contacting surface with phenolic condensation cementing material and bringing a rubber sole into contact with said sole element and compressing and heating said parts to smultaneousl vcure the phe nolicI condensation materia andvulcanize the rubber-'and permanently unite them.

11. 4The shoe making process comprising assembling an upper, a solo stiflenin member formed of fabric carrying pheno ic condensation cementing material and a rubber element, and compressing and heatin such elements to vsimu taneously cure, vu canize and permanently unite them.

12. The shoe making process comprising assembling an upper, a sole stiflening member comprising brons material carrying phenolic condensation cementing material and a rubber element, and compressing'and heatin such elements to cure, vulcanize and unite t em.

13'. The shoe makin` process comprising blingan up r ornent,A a sole member comprisilg Yroue material carrying phenolic con ensation cementing material and a rubber element, and heating auch ele- .ments to unite them. 1

14. The shoe makin process comprisingI assembling and plrelimmarily connecting upr, insole alid'd oe .sti''enin'g members having Goperating portions formed of fabric impregnated with phenolic condensation cementi heating the ooperati parte of said elementa to simultaneoli y cure the phenolic condensation-,material in such shoe elements and lgtmitlthe rubberand permanently u n'te. n h elements.

5. e shoe making rocess comprising assembling and prellmmarily connecting j material, compressing therewithl a vulcan :ed rubber composition sole and i an upper, an insole and a shoe stiffening member having coperating portions formed of fabric impregnated with phenolic condensation cementing material, and in compressing and heating said portions to simultaneously cure and solidify the phenolic condensation material lin such shoe elements and permanently unite them.

1G. The shoe making process comprising assembling an upper and a shoe member having cooperating portions formed ot' fibrous nmterial carrying phenoli(I condensationcementing material, and heating said portions to cure the phenolic condensation material in such shoe elements and unite them.

17. The shoe making process comprising assembling a rubber sole, an upper and an interposed fabric sole element, carrying phenolic condensation cementing material and holding together and heating said arts to simultaneously cure, and unite sai elements. p

18. The process of making footwear which comprises assembling an upper element and a fabric sole element carrying henolic condensation cementing materia in their cooperating portions, and a vulcani@ t able rubber sole, and holding together and heating said elements to simultaneously 80 cure, vulcanize and unite them.

19. The process of making footwear which comprises assemblin an upper element and a fibrous sole e ement carryi phenolic condensation cementing materia in their coperating portions, and a vulcanizable rubber sole element, and heating said elements to eure and unite them.

HENRY c. EGERTON. 

